GTN Series Planetary Gearbox-18 Frame Sizes,Up to 520,000 Nm,In-Line&Right-Angle Configurations

◆GTN Series modular planetary units achieve up to 97 percent efficiency and transmit torques to 520 kilonewton meters. Inline and right-angle configurations cover ratios from 3.4 to 290. How it works: input power divides across multiple planet gears orbiting a central sun gear within a fixed ring gear. Load sharing multiplies output torque while minimizing stress on individual tooth contact surfaces. Foot mounting, flange mounting, and shaft mounted arrangements accept standard IEC motors. Output options include solid shaft with key, splined hollow shaft, and hollow shaft with shrink disc. Applications span conveyor drives, mixers, crushers, extruders, slewing rings, and wind turbine yaw systems.

▼Key Features

• ★ 18 modular frame sizes

• ★ In-line (1–4 stages) and right-angle (2–4 stages) versions

• ★ Rated output torque up to 520,000 Nm

• ★ Gear ratios: in-line 3.4–290, right-angle 7–95

• ★ High efficiency: up to 97% for single-stage units

• ★ Splined connections for internal components

• ★ Ductile cast iron housing

• ★ Heavy-duty tapered roller bearings on HS and HK versions

• ★ Multiple mounting arrangements: flange, foot, shaft-mounted

• ★ Input adaptors for IEC motors, parallel shafts, or integral motors

• ★ Ambient temperature range: –20°C to +40°C

▼Specifications

▼GTN Series High Efficiency Planetary Gearmotor Typical Industrial Applications

�FAQ

Q 1: How much energy can I actually save with the GTN series’ 97% efficiency?

A:

Energy savings depend on your run hours. HelmeDrive's GTN series delivers single-stage efficiency up to 97%—higher than typical planetary gearboxes (95–96%).

What that means in real numbers:

These savings come from:

· Splined connections– no keyway stress, less power loss

· Precision-ground gears– lower friction, cooler running

· Optimized tooth profiles– smooth, efficient power flow

A solar tracker manufacturer in Vietnam switched from imported planetary gearboxes to GTN units. They reported a 4.2% drop in overall energy consumptionacross their tracking systems—enough to pay back the upgrade within 18 months.

For a custom savings estimate based on your motor size and duty cycle, send us your operating hours and we’ll run the numbers.

Q 2: How does the GTN series handle heavy overhung loads from belt drives or sprockets?

A:

Our GTN series is built withheavy-duty tapered roller bearingson HS and HK versions. This gives up to30% higher overhung load capacitythan standard planetary gearboxes.

What that means for your application:

If your load applies off the shaft midpoint, we use conversion formulas to adjust the permissible load—no guesswork.

A packaging plant in Mexico runs GTN gearboxes on their palletizing lines with chain drives. Each unit handlesover 120 kN radial loadat the shaft end. After two years, no bearing or seal failures.

For your specific belt or chain load, give us the force and distance from shaft shoulder—we’ll calculate the safe capacity.

Q 3: What’s the real cost difference between GTN and European planetary gearboxes?

A:

Performance-wise, GTN is on par with leading European brands—same modularity, same load capacity, same efficiency. The difference is incost, delivery, and flexibility.

A food packaging plant in Vietnam replaced their European planetary gearboxes with GTN units on their palletizing lines. They achieved the same performance withcompetitive pricingand the added benefit of hollow shaft mounting (GSH option) that simplified installation and reduced alignment time by 40%.

Want a side-by-side comparison for your next project? Send us your spec sheet and we’ll quote a direct alternative.

📬shawn.zhu@helmedrive.com

GTN Series Planetary Gear Speed Reducer – Application-Based Selection Guide

◆When selecting a planetary gear speed reducer for industrial applications, it is essential to consider not only power and speed but also the unique demands of each sector—compact installation spaces, high torque density, frequent start-stop cycles, and diverse environmental conditions. Below is a practical selection guide based on real-world applications of the HelmeDrive GTN Series Planetary Gear Speed Reducer—built on real-world data, so you can choose with confidence.

◆The HelmeDrive GTN Series is a modular planetary gear reducer designed for a wide range of industrial applications. It features a highly flexible modular system with in-line and right-angle versions, covering 18 frame sizes with power ranges from 0.25 kW to 20 kW (in-line) and 0.25 kW to 7 kW (right-angle). Output torque capacities reach up to 520,000 N·m for in-line units and 400,000 N·m for right-angle units, with reduction ratios from 3.4:1 to 290:1 (in-line) and 7:1 to 95:1 (right-angle). Key features include:

n High-quality die-cast aluminum alloy housing (sizes up to 090) and cast iron housing (larger sizes) with optimized cooling fins

n Hardened and precision-ground gears (case-hardened, surface hardness up to HRC 58–62)

n High torque density and excellent overhung load capacity due to heavy-duty tapered roller bearings

n Multiple input configurations: coaxial input, bevel gear input, helical gear input, bevel-helical input

n Multiple output types: solid keyed shaft, hollow shaft with shrink disc, splined hollow shaft, flanged output

n Universal mounting positions (horizontal, vertical, torque arm)

n Lifetime lubrication option available for certain models

▼Product Overview

Note:  For detailed ratings, please refer to the technical tables.

▼Application Areas (Derived from Driven Machine Classifications and Real-World Examples)

The table below summarizes key application sectors and typical machinery types where GTN Series reducers excel, based on industry-standard load classification and documented application examples.

1. Sheet Metal Forming & Press Brake Applications

Common Pain Points:

n High peak torque during bending and shearing operations

n Frequent reversing and rapid acceleration/deceleration

n Need for precise positioning and low backlash

n Compact installation in machine frames

Selection Recommendations:

2. Mixing & Agitation Applications

Applications include:Stirrers in chemical reactors, Food mixers, Pharmaceutical agitators, Wastewater treatment mixers

Common Pain Points:

n Variable torque due to viscosity changes

n Vertical mounting with motor above tank

n Corrosive environment from chemicals or cleaning agents

n Smooth, vibration-free operation required

Selection Recommendations:

3. Conveyor & Material Handling Applications

Applications include:Belt conveyors, Bucket elevators, Screw conveyors, Apron feeders, Escalators

Common Pain Points:

n High radial loads from pulleys and sprockets

n Continuous operation in dusty environments

n Need for reliable sealing and backstop

n Space constraints requiring hollow shaft mounting

Selection Recommendations:

4. Hoisting & Crane Applications

Applications include:Winches, Hoist drives, Crane travel mechanisms, Slewing gears, Lifting mechanisms

Common Pain Points:

n High starting torque under load

n Safety requirements for load holding

n Shock loads during acceleration/braking

n Compact installation in crane machinery houses

Selection Recommendations:

5. Marine & Offshore Applications

Applications include:Mooring winches, Deck cranes, Towing winches, Anchor handling systems

Common Pain Points:

n Corrosive saltwater environment

n Shock loads from wave action

n Limited space on deck

n Need for high reliability with minimal maintenance

Selection Recommendations:

★Technical Specifications Reference

*Note: For complete data, consult HelmeDrive engineering.

★Understanding HelmeDrive GTN Model Designation

Example: GTN15L3-BS-50-B532-96-N

★What to Know Before You Buy

     ▶Choose the right configuration– GTN series offers in-line (L) for coaxial drives and right-angle (R) for space-saving 90° layouts. Select based on your machine’s layout and available space.

▶Select the correct stage count– Use 1-stage for low ratios (up to 10), 2-stage for medium ratios (10–70), 3-stage for higher ratios (70–300), and 4-stage for very high ratios (>300). The number of stages affects efficiency and torque capacity.

▶Account for service factors– Multiply the required output torque or power by f1 (driven machine coefficient) based on load type and daily operating hours. Adjust for ambient temperature using f4 (thermal factor) from table A1. For safety-critical applications (hoisting), use Sf ≥ 1.4(Table 6).

▶Check thermal power for continuous duty– For applications running more than 60% of the time, calculate P_G = P_G1 × f4 × f14 and ensure P₂ ≤ P_G. If not, consider forced lubrication, cooling fan (SV option), or a larger gearbox.

▶Mounting position affects lubrication– GTN reducers can be mounted in any orientation, but vertical mounting (V5, V6) may require a compensation tank to ensure upper bearings are lubricated. For B5…1 positions, consult HelmeDrive. Always specify the mounting position when ordering.

▶Consider radial and axial loads– The output shaft is designed for high overhung loads, but you must check the permissible radial load Rn2 based on the load application point X and expected lifetime. Use the load diagrams and adjust with fL and fn factors.

▶Backstop option– For inclined conveyors, elevators, or hoists where reverse rotation is unacceptable, specify the backstop option (SSP/NSP for GTP2K/GTP3K models). Note that backstops are unidirectional; specify rotation direction.

▶Lubrication is not included– GTN reducers are delivered without oil. Fill with the recommended oil (ISO VG 150–460 depending on ambient temperature) to the correct level as indicated by the oil level plug. Refer to the oil quantity tables for your specific mounting position.

▶Let HelmeDrive help with selection– With 18 frame sizes, multiple input/output types, and extensive accessory options, proper sizing requires accurate load data. Send your application parameters—load characteristics, required output torque/speed, input power available, mounting position, duty cycle, and environmental conditions—to HelmeDrive  📩 shawn.zhu@helmedrive.com for precise gearbox sizing.

By matching your selection to your actual working conditions and operational challenges, you ensure longer equipment life, lower maintenance costs, and higher system reliability.HelmeDrive is committed to providing robust, efficient solutions tailored to your industrial needs.

📬shawn.zhu@helmedrive.com